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15-Letter Words Starting With CO

  • 329 words
  • All English dictionaries
  • Scrabble points
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Popular 15-Letter Words Starting With CO

The most familiar words on this list, with their Scrabble scores.

All 15-Letter Words Starting With CO 329 words

How common is CO at the start of fifteen-letter words?

Our combined English word list has 329 fifteen-letter words that start with CO. They average 22.5 points, the best is COENZYMATICALLY (36 points) and 51.7% end in S.

Total words
329
Average Scrabble score
22.5
out of 36 max
Everyday words
3%
common in ordinary English
Most common ending
S
51.7% of words

Most common last letters

  • s 51.7%
  • y 14.6%
  • g 8.8%

Top vowel pairs

  • ou24.6%
  • io24.3%
  • ie12.2%

Share of words where these two vowels sit side by side.

Rare words worth knowing

Valid in this dictionary but rarely seen in everyday English.

Highest-scoring fifteen-letter word that starts with CO

c 3o 1e 1n 1z 10y 4m 3a 1t 1i 1c 3a 1l 1l 1y 4

C 3 + O 1 + E 1 + N 1 + Z 10 + Y 4 + M 3 + A 1 + T 1 + I 1 + C 3 + A 1 + L 1 + L 1 + Y 4 = 36 points

Double word
72 pts
Triple word
108 pts

Face value of the tiles, then the whole word on a double- or triple-word square (letter bonuses and bingos not included).

coenzymatically

No dictionary definition on file. This is a valid game word that standard dictionaries rarely cover.

  • Scrabble US
  • Scrabble UK
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15-Letter Words Starting With CO by the numbers

15-Letter Words Starting With CO FAQ

How many fifteen-letter words that start with CO are there?

There are 329 fifteen-letter words that start with CO in our combined English word list. Other dictionaries give different totals, so switch dictionary at the top of the list to compare.

What is the highest-scoring fifteen-letter word that starts with CO?

COENZYMATICALLY is worth 36 points in Scrabble before any bonus squares. Other strong options are COMPREHENSIVIZE (36), CONTEXTUALIZING (34), COMMERCIALIZING (33).

What are some common fifteen-letter words that start with CO?

Everyday examples include CONFIDENTIALITY, CONGRATULATIONS, COMPREHENSIVELY, CORRESPONDINGLY, COMPETITIVENESS, CONSCIENTIOUSLY, CONSERVATIONIST, CONSTITUTIONALS. Sort the list by "Most common" to see the familiar words first.

Which rare fifteen-letter words that start with CO score well?

Uncommon but valid choices include COENZYMATICALLY (36), COMPREHENSIVIZE (36), CONTEXTUALIZING (34), COMMERCIALIZING (33). Few players know them, so they can catch an opponent off guard.